Like Fuzzy Ken being a member of a musicians union local, I worked for several years as a stage hand. I had to have a permit from the Internal Alliance of Theatrical and Stage Employees (IATSE). The first year I wasn't a member of IATSE, I just had their permission to work as a stage hand at $15.00 an hour -- much more than I was able to make doing anything else except tend bar. After a year I was "invited" to join IATSE. I joined. Suddenly I was making $30.00 an hour and paying a whopping $40 a month in union dues. I kept this up for two more years and then tapered off when I was accepted to graduate school.
I rather enjoyed being a union "brother", but had I remained in that line of work I woud most likely be dead from a drug overdose or alcoholism. At the time my union "brothers" and "sisters" were far too interested into snorting their paychecks up their noses. This still continues. But the union health benefits were great. And despite the rampant drug use, I have yet to meet a more professional group of people in any other field. No one was ever high at work.
The women who work in my bar/restaurant in Elko are occasionally approached by the food and beverage workers union that is hard set like cement in Las Vegas and Reno. Every time they have been approached, they've met and discussed the pros and cons. As yet, they see no reason to ruin a good thing. I give them free reign to manage the kitchen, tend bar and waitress. I've told them "This is your restaurant. Serve what you would like to eat that isn't offered anywhere else in town." What is on the menu is what they have decided should be on the menu. Hence, the food is substantially above the usual fare served in the casinos. And bless their hearts, they recognized a market for fancy non alcohol drinks for "the ladies of Elko who like to lunch" and not careen home with a buzz on. And these same concoctions can be easily spiked with a shot of gin or vodka upon request. The grenadine lemonade they advertise as a Thursday special is very popular as is their ginger ale with pineapple/orange juice ice cubes. I worked the numbers one day and discovered they were pulling in almost a thousand percent profit on their little lady-like concoctions. And they sell very well during lunch and dinner. However, if they were to join the food and beverage union they'd be seeing a guaranteed wage that is lower than what they, themselves, can generate. For them there is no benefit. Currently, the more money the bar/restaurant makes the more money they make. But if they ever want to join a union they are welcome to. I won't stop them.
As for me, I've been a member of the Writers Guild of America West (WGAW) and the Writers Guild of the America East (WGAE) since 1980. After some naive missteps during graduate school I wouldn't think of developing a project spec, travel article, plush piece for the leisure living section of a paper or magazine, or manuscript of any length without the full force of the Writer's Guild behind me, whether I publish anything or not in a given year. As with Fuzzyken, if you want reproduction rights for something I've created (written), you are going to pay for those rights -- and they'll be protected with so much legalese that I'll have your great great grandchildren for lunch if the terms of the agreement are broached.